<?php /* @var $installer Mage_Core_Model_Resource_Setup */ //$installer = $this; $installer = new Mage_Sales_Model_Resource_Setup('core_setup'); $installer->startSetup(); $installer->getConnection()->addColumn($installer->getTable('sales/quote_payment'), 'installment_type_id', Varien_Db_Ddl_Table::TYPE_INTEGER); $installer->addAttribute('quote_payment', 'installment_type_id', array('type' => 'int', 'visible' => false)); $installer->endSetup();